Free ITC Calculator for GST Input Credit
GST Input Tax Credit Calculator
Enter tax payable and ITC credits available to calculate Input Tax Credit under IGST, CGST & SGST.
Tax Credit Summary
IGST credit adjusts IGST first, then CGST, then SGST. CGST credit adjusts only CGST. SGST credit adjusts only SGST.
Enter tax payable and ITC credits available under IGST, CGST and SGST to calculate how your Input Tax Credit can be adjusted before filing GSTR-3B. Accurate ITC calculation helps businesses understand their actual GST cash payable after eligible credit utilisation.
BUSY's ITC Calculator follows the prescribed GST credit adjustment logic, where IGST credit is used first, and the remaining eligible credits are applied as per the permitted utilization order. This helps you use available ITC correctly, avoid manual set-off errors and check unused ITC balance that may be carried forward.
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What is Input Tax Credit (ITC)?
Input Tax Credit (ITC) is the GST paid by a business on purchases, expenses and inward supplies that can be used to reduce GST liability on sales. Instead of paying GST on the entire output tax amount, eligible businesses can claim credit for GST already paid on business-related purchases.
ITC plays an important role in reducing tax costs and avoiding cascading taxation. However, GST law prescribes specific rules for how available credit can be adjusted across different tax heads. This tool is useful for:
GST-registered businesses
Accountants and finance teams
Chartered Accountants
Tax consultants
GST return preparers
Business owners managing GST compliance
Enter the following details:
- IGST payable
- CGST payable
- SGST payable
- Available IGST credit
- Available CGST credit
- Available SGST credit
How to Use BUSY's ITC Calculator?
BUSY's ITC Calculator is built for quick pre-filing checks. You can calculate the credit adjustment in a few simple steps.
Enter Your GST Liability
Enter your GST liability under IGST, CGST and SGST based on your GSTR-3B draft.
Add Available Credits
Add available IGST, CGST and SGST credits from your Electronic Credit Ledger balance.
Click Calculate
Click Calculate to apply the prescribed ITC set-off sequence across applicable GST liabilities.
View the Results
View total ITC utilised, net GST payable and any remaining credit balance.
Types of Input Tax Credit Calculated
Understanding each tax head helps you read the calculator output correctly. The GST credit utilisation order is based on Section 49A, Section 49B and Rule 88A, where IGST credit is used first before other credits are applied.
IGST (Integrated GST)
IGST is levied on inter-state supplies of goods or services and on imports into India. IGST credit is the most flexible ITC head. It is used first against IGST liability and the remaining balance can be used against CGST, SGST or UTGST liability as permitted.
CGST (Central GST)
CGST is levied by the Central Government on intra-state supplies and is collected along with SGST. CGST credit is first used against CGST liability. Once IGST credit is fully exhausted, remaining CGST credit may be used against IGST liability. CGST credit cannot be used to pay SGST or UTGST liability.
SGST (State GST)
SGST is levied by the State Government on intra-state supplies and is collected along with CGST. SGST credit is first used against SGST liability. Once IGST credit is fully exhausted, remaining SGST credit may be used against IGST liability. SGST credit cannot be used to pay CGST liability.
UTGST (Union Territory GST)
UTGST applies in place of SGST in union territories such as Chandigarh, Andaman and Nicobar Islands, Dadra and Nagar Haveli and Daman and Diu, Lakshadweep and Ladakh. UTGST credit follows the same broad treatment as SGST credit. It is used against UTGST liability first and can then be used against IGST liability as permitted.
Note: This calculator does not check blocked credits under Section 17(5) of the CGST Act. Exclude ineligible ITC such as blocked motor vehicle credit, food and beverage credit, works contract credit used for construction, club membership and other restricted credits before entering your ITC balance.
Example of ITC Calculation with Adjustment
The following example shows how BUSY's ITC Calculator applies ITC set-off rules to reduce cash outflow.
Tax Payable (Output GST)
Input Tax Credit (Available)
Adjustment Process
Final Payable
This structured adjustment reduces the total cash payment to ₹7,000 against a gross GST liability of ₹32,000. The calculator gives you this result instantly, without manual spreadsheet work.
Benefits of Using an ITC Calculator
Manually applying GST set-off rules can be confusing, especially when multiple tax heads are involved. BUSY's ITC Calculator simplifies the process.
Accurate Credit Utilisation
Applies GST adjustment rules automatically.
Faster GSTR-3B Preparation
Estimate tax payable before filing returns.
Reduced Manual Errors
Avoid incorrect credit utilisation and calculation mistakes.
Better Cash Flow Planning
Know your expected GST cash outflow in advance.
Quick Reconciliation
Compare liabilities with available ITC instantly.
Compliance Support
Understand GST liability before making payments.
Explore Relevant Guides
To understand ITC eligibility, blocked credits, documentation rules and reconciliation steps, refer to the complete guide to Input Tax Credit under GST:
This blog dives deeper into ITC eligibility, blocked credits under Section 17(5), documentation rules, and practical tips to avoid mismatches during reconciliation.